• Home
• Tags

nationalbureauofstandards

1 photo and 2 illustrations tagged nationalbureauofstandards, from 2 members of Flickr Commons.

When were these photos & illustrations taken?

Where were these photos & illustrations tagged?

None of these photos & illustrations are geotagged.

Related tags

Tags that often appear on the same photos & illustrations:

• posters
• congresses
• medicalartsandphotographybranchunitedstates
• photomechanicalprint
• stillimage
• publicdomain
• freeimages
• printsandphotographs
• nationallibraryofmedicine
• nlm
• ihm
• nationalinstitutesofhealth
• nih
• archivesofmedicine
• nlmdigitalcollection
• libraryofcongress
• acoustics
• physicists
• mysterysolved
• xmlns:dc=httppurlorgdcelements11
• usbureauofstandards
• acousticalresearch
• vlchrisler
• vivianleroychrisler

Members using this tag

• National Library of Medicine 2 photos & illustrations
• The Library of Congress 1 photo / illustration

Conversations

Here’s a selection of the conversations happening on these photos & illustrations:

Identified! [Vivian Leroy Crisler (1885-1953), an acoustics researcher at the National Bureau of Standards, Washington, D.C., looking over a loud speaker horn used in sound penetration tests] (LOC)

from The Library of Congress

• 14 older comments, and then…
• Mark Dries said:

  No idea, but let's compose a piece of music for it!

• Ashtabula Archive said:

  Air raid/emergency siren

• Melinda Young Stuart said:

  Early audio recorder/player ?

• Ross said:

  Funny that 1923–1929 is well before the invention of the Leslie speaker, which this definitely resembles.

• Ross said:

  The nameplate on the speaker horn says Western Electric and maybe model 518-W? If so, that was a domestic radio speaker and probably wouldn't deliver siren-level volume. The question remains what it is doing on the spinning rig—it looks like there are slip rings to make the electrical connection while spinning. Radio special effects?